This 180-degree view from the navigation camera on the Mars Exploration Rover Opportunity is the first look inside "Endurance Crater." The view is a cylindrical projection constructed from four images. The crater is about 130 meters (about 430 feet) in diameter.

This three-dimensional, 180-degree view from the navigation camera on the Mars Exploration Rover Opportunity is the first look inside "Endurance Crater." The view is a cylindrical-perspective projection constructed from four images. The crater is about 130 meters (about 430 feet) in diameter.

This 180-degree view from the left navigation camera on the Mars Exploration Rover Opportunity is the first look inside "Endurance Crater." The view is a cylindrical-perspective projection constructed from four images. The crater is about 130 meters (about 430 feet) in diameter.

This 180-degree view from the right navigation camera on the Mars Exploration Rover Opportunity is the first look inside "Endurance Crater." The view is a cylindrical-perspective projection constructed from four images. The crater is about 130 meters (about 430 feet) in diameter.